Could not find a version that satisfies the requirement

Question

I\'m installing several Python packages in Ubuntu 12.04 using the following requirements.txt file:

numpy>=1.8.2,<2.0.0
matplotlib>=1.3.         


        

Answer 1

Not always, but in some cases the package already exists. For example - getpass. It is not listed by "pip list" but it can be imported and used:

If I try to pip install getpass I get the following error: "Could not find a version that satisfies the requirement getpass"